Cisco CB21AG Installation And Configuration Manual page 82

Setting Security Parameters
The client adapter uses the username, password, and PAC to perform mutual authentication with the
RADIUS server through the access point. The username and password need to be re-entered each
time the client adapter is inserted or the Windows device is rebooted unless you configure your
adapter to use saved EAP-FAST credentials.
PACs are created by Cisco Secure ACS and are identified by an ID. The user obtains his or her own
copy of the PAC from the server, and the ID links the PAC to the profile created in ADU. When
manual PAC provisioning is enabled, the PAC is manually copied from the server and imported onto
the client device. The following rules govern PAC storage:
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EAP-FAST authentication is designed to support the following user databases over a wireless LAN:
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LDAP user databases (such as NDS) support only manual PAC provisioning while the other three
user databases support both automatic and manual PAC provisioning.
EAP-TLS—This authentication type uses a dynamic session-based WEP key derived from the
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client adapter and RADIUS server to encrypt data. It uses a client certificate for authentication.
RADIUS servers that support EAP-TLS include Cisco Secure ACS release 3.0 or later and Cisco
Access Registrar release 1.8 or later.
Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
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PACs are stored as encrypted data files in either the global or private store on the user's
computer.
• Global PACs can be accessed and used by any user at any logon stage. They are available
before or during logon or after the user is logged off if the profile is not configured with the
No Network Connection Unless User Is Logged In option.
• Private PACs can be accessed and used only by the user who provisioned them or the system
administrator.
Note Global PACs are stored on C:\Document and Settings\All Users\Application
Data\Cisco\cscostore, and private PACs are stored on C:\Document and Settings\user\
Application Data\Cisco\cscostore.
If automatic PAC provisioning is enabled and it occurs after the user is logged on, the PAC is
stored in the private store of the currently logged-on user. Otherwise, the PAC is stored in the
global store.
PAC files can be added or overwritten using the import feature.
PAC files can be removed using the delete feature. They are also deleted when you uninstall the
client adapter software.
Cisco Secure ACS internal user database
Cisco Secure ACS ODBC user database
Windows NT/2000/2003 domain user database
LDAP user database
Chapter 5 Configuring the Client Adapter
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